diff --git a/Models/Response/Picture/PictureResponse.cs b/Models/Response/Picture/PictureResponse.cs
index 479f404..6a7d13d 100644
--- a/Models/Response/Picture/PictureResponse.cs
+++ b/Models/Response/Picture/PictureResponse.cs
@@ -15,7 +15,12 @@ public record PictureResponse
     public DateTime? TakenAt { get; set; }
     public ExifInfo? ExifInfo { get; set; }
     public int? UserId { get; set; }
-    public string? Username { get; set; }
+    private string? _username;
+    public string? Username
+    {
+        get => string.IsNullOrEmpty(_username) ? "匿名" : _username;
+        set => _username = value;
+    }
     public bool IsFavorited { get; set; }
     public int FavoriteCount { get; set; }
     public int? AlbumId { get; set; }